Sorry about your troubles! Most of us that have been dealt a Porsche engine rebuild for one reason or another, understand that sinking feeling!!!
I'm sure this is not what you're looking for, but this struck many of us as an interesting and viable "solution"; LS conversion. Starting you off on page 5, with the arrival of the crate engine, but you can see the OP's IMSB carnage on page 1. It's good to know all the options:
http://forums.pelicanparts.com/off-topic-discussions/769375-pretty-bummed-about-imsb-5.html
Watching the progress unfold in the subsequent pages, really won over a lot of "purists" who originally thumbed their noses at the project.
__________________
-jeff
back in the saddle: '95 993 - just another black C2
*SOLD*: '87 930 GP White - heroin would have been a cheaper addiction...
"Ladies and Gentlemen, from Boston Massachusetts, we are Morphine, at your service..." - Mark Sandman (RIP
)